{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["ethnicity of people", "nationality", "ethnicity", "company shareholder among major shareholders"], "input": "Marat Safin advanced to the fourth round with a 6-3 , 6-2 , 6-3 victory against Olivier Rochus of Belgium ."}
{"ethnicity of people": [], "nationality": [{"subject": "Olivier Rochus", "object": "Belgium"}], "ethnicity": [], "company shareholder among major shareholders": []}